/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchyController.h
Imports the content of a RigHierachyContainer (the hierarchy v1 pre 5.0) This is used for backwards compatbility only during load and does not support undo.
[TArray](API\Runtime\Core\Containers\TArray)< [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) > ImportFromHierarchyContainer ( const [FRigHierarchyContainer](API\Plugins\ControlRig\Rigs\FRigHierarchyContainer) & InContainer, bool bIsCopyAndPaste )